Complete all of the high-tier slayer achievements.

Complete the achievement "Doesn't Play Well With Others"
Complete the achievement "Don't Bug Me"
Complete the achievement "I Hate Snakes!"
Complete the achievement "Pesticide"
Complete the achievement "We are the dead!"
Complete the achievement "Strange Weather"
Complete the achievement "The Zookeeper"
Complete the achievement "Swordfishmermaid"
Complete the achievement "Orc stomp!"
Complete the achievement "Ugly creature near my feet..."
Complete the achievement "BBBBBAAAARRRKKKK!!!!!"
Complete the achievement "Puttin' On The Dog"
Complete the achievement "It's Alive!"
Complete the achievement "Plants Concrete and Stone"
Complete the achievement "Here Be Dragons!"
Complete the achievement "Might They Be Giants?"
Complete the achievement "Legendary Creatures"
Complete the achievement "Planes, Trains and Element-iles"
Complete the achievement "A Sight for Sore Eyes"
Complete the achievement "Domo Arigato"
Complete the achievement "Foreign Affair"
Complete the achievement "Invaders in a Strange Land"
Complete the achievement "Your god has found you lacking."
Complete the achievement "Table Flipper"